FTTB工程设计规范前言目次1总则......................................................................................................................12引用标准..................................................................................................................23术语和符号..............................................................................................................34FTTB系统架构.......................................................................................................54.1网络结构……………………………………………………………………………………….54.2网络连接……………………………………………………………………………………….64.3PON系统内带宽分配…………………………………………………………………………74.4PON系统覆盖范围的测算…………………………………………………………………..104.5网元设置……………………………………………………………………………………...114.6PON系统的保护……………………………………………………………………………..115EPON设备配置要求............................................................................................145.1业务承载能力………………………………………………………………………………..145.2ONU设备形态……………………………………………………………………………….145.3设备接口要求………………………………………………………………………………..155.4业务承载方式和性能指标要求……………………………………………………………..165.5功能要求……………………………………………………………………………………..185.6FTTB系统运行环境要求……………………………………………………………………225.7电源要求……………………………………………………………………………………..225.8电气安全要求………………………………………………………………………………..236网管功能要求和系统设计....................................................................................246.1EPON网元管理功能要求……………………………………………………………………246.2EMS网管功能要求………………………………………………………………………….246.3网管系统设计………………………………………………………………………………..277网络资源配置........................................................................................................287.1VLAN划分原则……………………………………………………………………………..287.2IP地址规划原则…………………………………………………………………………….287.3用户认证方式……………………………………………………………………………….297.4IAD用户的编号…………………………………………………………………………….297.5QOS实现方式……………………………………………………………………………….298ODN设计..............................................................................................................3118.1ODN结构……………………………………………………………………………………318.2无源光器件选用…………………………………………………………………………….328.3光纤光缆选用及安装要求………………………………………………………………….338.4ODN传输指标的设计………………………………………………………………………349引入线子系统........................................................................................................369.1系统设计……………………………………………………………………………………..369.2系统指标……………………………………………………………………………………..379.3楼宇机柜（箱）…………………………………………………...
